when i multiply fractions...

Discussion in 'The Spam Zone' started by Master of the Onyx Flame, Oct 5, 2009.

  1. Master of the Onyx Flame Hollow Bastion Committee

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    i multiply straight across and then just reduce, right?
    or is there some odd lame math trick to those too?
     
    Master of the Onyx Flame, Oct 5, 2009
    Master of the Onyx Flame, Oct 5, 2009
    #1

  2. Boy Wonder Dark Phoenix in Training

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    What the hell has your teacher been doing?
     
    Boy Wonder, Oct 5, 2009
    Boy Wonder, Oct 5, 2009
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  3. Master of the Onyx Flame Hollow Bastion Committee

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    kicking me out of class >.>
     
    Master of the Onyx Flame, Oct 5, 2009
    Master of the Onyx Flame, Oct 5, 2009
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  4. Sumi suicidé

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    Cross multiply >>
    What grade are you in?
    ​
     
    Sumi, Oct 5, 2009
    Sumi, Oct 5, 2009
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  5. TheMagicalMisterMistoffelees Professional Crazy

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    Cross multiplying is for finding equivalency, there is no trick to multiplying fractions so he's got it. Numerator is numerator 1 times numerator 2, denominator is denominator 1 times denominator 2, then simplify if possible.
     
    TheMagicalMisterMistoffelees, Oct 5, 2009
    TheMagicalMisterMistoffelees, Oct 5, 2009
    #5

  6. Advent 【ＤＲＡＧＯＮ　ＢＡＬＬＳＹ】

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    No no no, cross multiplying only works when you have one fraction set equal to another. To answer your question, you just multiply across, yes.
     
    Advent, Oct 5, 2009
    Advent, Oct 5, 2009
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  7. Sumi suicidé

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    I made a mistake in what I said, I believe. Not cross multiply, cross divide maybe? I don't even remember. When you take numerator 1 and denominator 2 and cross them out-ish?
    ex. 4/3 x 18/8 = 1/1 x 6/2 = 6/2 = 3    ​
     
    Sumi, Oct 5, 2009
    Sumi, Oct 5, 2009
    #7

  8. the muffin man Banned

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    the muffin man, Oct 5, 2009
    the muffin man, Oct 5, 2009
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